Daniel Dennett: Trending quotes (page 2)

“We alone can be wracked with doubt, and we alone have been provoked by that epistemic itch to seek a remedy: better truth-seeking methods. Wanting to keep better track of our food supplies, our territories, our families, our enemies, we discovered the benefits of talking it over with others, asking questions, passing on lore. We invented culture. Then we invented measuring, and arithmetic, and maps, and writing. These communicative and recording innovations come with a built-in ideal: truth. The point of asking questions is to find true answers; the point of measuring is to measure accurately; the point of making maps is to find your way to your destination. … In short, the goal of truth goes without saying, in every human culture.”

“Much of the controversy and anxiety that has enveloped Darwin's idea … can be understood as a series of failed campaigns to contain Darwin; s idea within some acceptably "safe" and merely partial revolution. Cede some or all of modern biology to Darwin, perhaps, but hold the line there! Keep Darwinian thinking out of cosmology, out of psychology, out of human culture, out of ethics, politics, and religion! In these campaigns, many battles have been won by the forces of containment: flawed applications of Darwin's idea have been exposed and discredited, beaten back by the champions of the pre-Darwinian tradition. But new waves of Darwinian thinking keep coming.”

“It is commonly observed — but not commonly enough! — that old folks removed from their homes to hospital settings are put at a tremendous disadvantage, even though their basic bodily needs are well provided for. They often appear to be quite demented — to be utterly incapable of feeding, clothing, and washing themselves, let alone engaging in any activities of greater interest. Often, however, if they are returned to their homes, they can manage quite well for themselves. How do they do this? Over the years, they have loaded their home environments with ultrafamiliar landmarks, triggers for habits, reminder of what to do, where to find the food, how to get dressed, where the telephone is, and so forth. An old person can be a veritable virtuoso of self-help in such a hugely overlearned world, in spite of his or her brain's increasing imperviousness to new bouts of learning… Taking them out of their homes is literally separating them from large parts of their minds — potentially just as devastating a development as undergoing brain surgery.”

“Every human mind you've ever looked at … is a product not just of natural selection but of cultural redesign of enormous proportions.”

“The juvenile sea squirt wanders through the sea searching for a suitable rock or hunk of coral to cling to and make its home for life. For this task, it has a rudimentary nervous system. When it finds its spot and takes root, it doesn't need its brain anymore, so it eats it! (It's rather like getting tenure.)*

* The analogy between the sea squirt and the associate professor was first pointed out, I think, by the neuroscientist Rodolfo Llinas.”

“The task of the mind is to produce future, as the poet Paul Valéry once put it. A mind is fundamentally an anticipator, an expectation-generator. It mines the present for clues, which it refines with the help of the materials it has saved from the past, turning them into anticipations of the future. And then it acts, rationally, on the basis of those hard-won anticipations.”

“Evolution is all about processes that almost never happen. Every birth in every lineage is a potential speciation event, but speciation almost never happens, not once in a million births. Mutation in DNA almost never happens — not once in a trillion copings — but evolution depends on it. Take the set of infrequent accidents — things that almost never happen — and sort them into the happy accidents, the neutral accidents, and the fatal accidents; amplify the effects of the happy accidents — which happens automatically when you have replication and competition — and you get evolution.”

“Homunculi are bogeymen only if they duplicate entire the talents they are rung in to explain. If one can get a team or committee of relatively ignorant, narrow-minded, blind homunculi to produce the intelligent behaviour of the whole, this is progress.”

“Do I worship modern medicine? Is science my religion? Not at all; there is no aspect of modern medicine or science that I would exempt from the most rigorous scrutiny, and I can readily identify a host of serious problems that still need to be fixed. That's easy to do, of course, because the worlds of medicine and science are already engaged in the most obsessive, intensive, and humble self-assessments yet known to human institutions, and they regularly make public the results of their self-examinations. Moreover, this open-ended rational criticism, imperfect as it is, is the secret of the astounding success of these human enterprises. There are measurable improvements every day.”

“The fundamental core of contemporary Darwinism, the theory of DNA-based reproduction and evolution, is now beyond dispute among scientists. It demonstrates its power every day, contributing crucially to the explanation of planet-sized facts of geology and meteorology, through middle-sized facts of ecology and agronomy, down to the latest microscopic facts of genetic engineering. It unifies all of biology and the history of our planet into a single grand story. Like Gulliver tied down in Lilliput, it is unbudgable, not because of some one or two huge chains of argument that might — hope against hope — have weak links in them, but because it is securely tied by thousands of threads of evidence anchoring it to virtually every other area of human knowledge. New discoveries may conceivably lead to dramatic, even "revolutionary" shifts in the Darwinian theory, but the hope that it will be "refuted" by some shattering breakthrough is about as reasonable as the hope that we will return to a geocentric vision and discard Copernicus.”

“People ache to believe that we human beings are vastly different from all other species — and they are right! We are different. We are the only species that has an extra medium of design preservation and design communication: culture. … We have language, the primary medium of culture… In a few short millennia — a mere instant in biological time — we have already used our new exploration vehicles to transform not only our planet but the very process of design development that created us.”

“Here is a well-known trajectory: You begin with a heartfelt desire to help other people and the conviction, however well or ill founded, that your guild or club or church is the coalition that can best serve to improve the welfare of others. If times are particularly tough, this conditional stewardship — I'm doing what's good for the guild because that will be good for everybody — may be displaced by the narrowest concern for the integrity of the guild itself, and for good reason: if you believe that the institution in question is the best path to goodness, the goal of preserving it for future projects, still unimagined, can be the most rational higher goal you can define. It is a short step from this to losing track of or even forgetting the larger purpose and devoting yourself singlemindedly to furthering the interests of the institution, at whatever costs. A conditional or instrumental allegiance can thus become indistinguishable in practice from a commitment to something "good in itself." A further short step perverts this parochial summum bonum to the more selfish goal of doing whatever it takes to keep yourself at the helm of the institution ("who better than I to lead us to triumph over our adversaries?")We have all seen this happen many times, and may even have caught ourselves in the act of forgetting just why we wanted to be leaders in the first place.”

“There is a familiar trio of reactions by scientists to a purportedly radical hypothesis: (a) "You must be out of your mind!", (b) "What else is new? Everybody knows that!", and, later — if the hypothesis is still standing — (c) "Hmm. You *might* be on to something!" Sometimes these phases take years to unfold, one after another, but I have seen all three emerge in near synchrony in the course of a half-hour's heated discussion following a conference paper.”

“Are zombies possible? They're not just possible, they're actual. We're all zombies.* Nobody is conscious — not in the systematically mysterious way that supports such doctrines as epiphenomenalism.

*It would be an act of desperate intellectual dishonesty to quote this assertion out of context!”

“Of all the mind tools we acquire in the course of furnishing our brains from the stockpiles of culture, none are more important, of course, than words — first spoken, then written. Words make us more intelligent by making cognition easier, in the same way (many times multiplied) that beacons and landmarks make navigation in the world easier for simple creatures. Navigation in the abstract multidimensional world of ideas is simply impossible without a huge stock of movable, memorable landmarks that can be shared, criticized, recorded, and looked at from different perspectives.”

“Go ahead and believe in God, if you like, but don't imagine that you have been given any grounds for such a belief by science.”

“Philosophers are never quite sure what they are talking about — about what the issues really are — and so often it takes them rather a long time to recognize that someone with a somewhat different approach (or destination, or starting point) is making a contribution.”

“As Akins observes, it is not the point of our sensory systems that they should detect "basic" or "natural" properties of the environment, but that they should serve our "narcissistic" purposes in staying alive; nature doesn't build epistemic engines.”

“Thanks to technology, what almost anybody can do has been multiplied a thousandfold, and our moral understanding about what we ought to do hasn't kept pace. … You can have a test-tube baby or take a morning-after pill to keep from having a baby; you can satisfy your sexual urges in the privacy of your room by downloading Internet pornography, and you can keep your favorite music for free instead of buying it; you can keep your money in secret offshore bank accounts and purchase stock in cigarette companies that are exploiting impoverished Third World countries; and you can lay minefields, smuggle nuclear weapons in suitcases, make nerve gas, and drop "smart bombs" with pinpoint accuracy. Also, you can arrange to have a hundred dollars a month automatically sent from your bank account to provide education for ten girls in an Islamic country who otherwise would not learn to read and write, or to benefit a hundred malnourished people, or provide medical care for AIDS sufferers in Africa. You can use the Internet to organize citizen monitoring of environmental hazards, or to check the honesty and performance of government officials — or to spy on your neighbors. Now, what ought we to do?”